Credit: The Associated Press

This Feburary 2012 photo, provided by the Utah Department of Corrections, shows Siale Angilau. A U.S. marshal shot and critically wounded Angilau on Monday, April 21, 2014, in a new federal courthouse after Angilau rushed the witness stand with a pen at his trial in Salt Lake City, authorities said. Angilau was one of 17 people named in a 29-count racketeering indictment filed in 2008 accusing gang members of conspiracy, assault, robbery and weapons offenses. The FBI said Angilau died Monday at the hospital. (AP Photo/Utah Department of Corrections)

Credit: The Associated Press

Police tape surrounds the Federal Courthouse Monday, April 21, 2014, in Salt Lake City. A U.S. marshal shot and critically wounded a defendant on Monday in a new federal courthouse after the man rushed the witness stand with a pen at his trial in Salt Lake City, authorities said. (AP Photo/Rick Bowmer)

Credit: The Associated Press

Members of the FBI evidence response team enter the Federal Courthouse, Monday, April 21, 2014, in Salt Lake City. A U.S. marshal shot and critically wounded a defendant on Monday in a new federal courthouse after the man rushed the witness stand with a pen at his trial in Salt Lake City, authorities said. Defendant Siale Angilau was hospitalized with at least one chest wound, FBI spokesman Mark Dressen said. The witness wasn't hurt. Angilau was one of 17 people named in a 29-count racketeering indictment filed in 2008 accusing gang members of conspiracy, assault, robbery and weapons offenses. (AP Photo/Rick Bowmer)

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SALT LAKE CITY — When Utah's new federal courthouse opened last week, it came with security improvements that are becoming standard around the country: separate entrances and elevators for judges, defendants and the public; bullet-resistant glass and paneling; and vehicle barricades to keep car bombs at bay.

Even the design of the courtrooms, with plenty of sunlight and space, can help calm witnesses or defendants in high-stress cases, some judges believe.